Dust guard



DUST` @JARD Filed @ril 2114957 ,EES@

INVENTR RDY STEVENS ATTORNEY E France 1v1-23, 193e t 2,159,825

UN1TED STATES PATENT l OFFICE "DUST GUARD any R. stevens, Forest nine, Pa., assigner te The Westinghouse Air Brake Company, Wilmer-ding, Pa., a corporation of Pennsylvania Application Api-i1 27, 1937, serial No. 139,183 s claims. (C1. zas-'6) foThis invention relates to car journal boxesand member `2l which, like the ring 20, is preferably ,moremparticularly to adjust guard for a journal made of aresilient material such as rubber. The

` f sealing member 21 is provided with outwardly d I it., 'lheprincipal object of my invention is to proextending flanges 28, which with the dust guard videyjan improved dust guard, which may be mounted in the journal box II as shown in Fig. 5 cheaply manufactured and will provide effective 1, are adapted to engage the walls of the slot I2.

; protection of the usual car journal box for a long It will be noted that due to the form of the seal- {sei-vice period. i ing member 21, the flanges 28 are adapted to be 1.3.. In the accompanying drawings,Fig. 1 is a. side flexed vinwardly when the dust guard is in the :elevation of a journal box having one form of my Slot I2 of the journal box, the body portion I8 10 improved dustguard associated therewith; Fig.2 being provided with suitably counter-sunk mar- Iijs a plan view ofthe dust guard shown in Fig. 1; ginal grooves 29 for receiving the anges 28. The gf:.`jFlg. 31s a view taken," on the line 3 3 of Fig. 2; flanges 28 are thus resiliently maintained in seal- Figd is a fragmentary sectional view taken on ing engagement with the walls of the slot I2 in ldyythe line 4-4 of Eig. 2; Fig;` 5 is a sectional side order to prevent access'of dirt to the axle bearing. 16 vlew fof a. dust guard` constructed according to Another form of the invention is illustrated in 3, another form of my invention; Fig. 6 is a ver- Fig.`5 of the drawings, in which the dust guard f i,1;ticalsectionalview of a journal box containing a Icomprises a moulded portion 3l made of resilient l" dust guardembodying al further modication of. material such as rubber and having an outer mmmy invention;` and Figs. 7, 8, and 9 are sectional channeled portion including outwardly extending 2o `side views of dust guards illustrating various `ilanges 32, and an inner sealing ring 33 which defotlier `embodiments of the invention. nes a circular opening 34 and is joined to the `As shown inFig. 1 of the drawings, there is outer channeled portion by meansof a web 34. @provided-a journal box II, which may be of the 'I'he web 34v is supported or reinforced by lamiu usual type having a vertical slot I2 `formed at` nated wood sections 35 disposed on opposite sides 25 "the", inner end surrounding the opening I3 thereof, the parts being held together by any through which the axle, I4 of a car extends into suitable manner such as by means of the rivets mthejournal box. Carried within the slot I2 is a 36. The laminated wood sections 35 are prol `1 `dustguard I6 embodying one formi of my invenvided with marginal recesses 38 for receiving the I ottici i flanges 32 when the clust guard is inserted in the 30 1 Y best shown in Figs. 2 and `3 of the drawjournal box, as will be understood from the defings, `the dust guard I 3 comprises a bodyportion scription presented in connection with Fig. l. ,3 jlhaving a circular opening` I9 through which 'I'hesealing ring 33 of the moulded portion 3| is n l i, the car axle is adapted to extend. yThe body porof course adapted for resilient engagement with gfltion` "I8` `may be made of any suitable material, lthe car axle. 35 "and in the drawings is illustrated as comprising Another form of dust guard embodying fea- `1 1 y af plurality of laminated woodenlayers, which tures of my invention is shown mounted in the `may be joined together by c'ement or glue. journal box I I in Fig. 6 of the drawings, in which `According to my invention, a resilientring the dust guard comprises a body portion 4I `of 40 is tted within the opening I8 in the dust guard laminated woodconstruction having an interior 40 I. tligthe ring `having an annular tongue or bead annular groove 42, and a moulded sealing ring 43 y I 2| :which `is adapted to be fitted within a suitable provided with an annular bead 44 which its 1 @interior groove 22 formed inthe body portion within the groove 42. The sealing ring 43 is pro- 1 HIJ The ring 20 is made of a` resilient material, vided with a plurality of lugs 45 which extend g 415such as rubber, and hasan innerilange24 inthe outwardly therefrom and are adapted to `be in- 45 :l fformoi `a truncated cone, which ange isadaptsertedwithin suitable recesses formed in the body "edfto engage the axle I4 in the manner illusportion 4I of the guard for preventing undesired `y I tratedln Fig. l` of the drawings. Radially exturning of the ring 43. I `1@tendinglugs 25 are formed on the outer portion 'I'he dust guard shown vin Fig. 'l of the drawl5()` `,of the `ring 20 and are adapted to be iltted withings is somewhat similar to that illustrated in 50 infsuitable recesses in the body portion I8 for Figs. 1, 2 and 3, except that the sealing mem- ",preventing the ring'- from rotating with the axle ber 2l is omitted, the inner sealing ring 20 being Y I iltted within the circular opening in the lami- (Surroundingthe' periphery of` the body pornated wood body 43, the outer margin of which V lltion` I8 of the guard I8 is a channeledl sealing is left plain. 55

Ing-Fig. 8 there is .illustrated another form ofrny limproved dust guard, in which a resilientv sealing ring 48 is provided for engaging the car axle, saidring being moulded in an arcuateform` j 'prisin g, incombination, a moulded rubber por- 5 'with an'interior'annular depression andhaving a fiat web portion 49 which is clamped between a pair of `laminated 'wood vbody sections 5,0.,by,v

means of rivets 5I. When the dust` guard shown in Fig. 8 is mounted in the journal box and the axle is extended through the opening therein, the ring portion 881s deilectecll so as to be given a cylindrical contour and due to the inherent resiliency thereof is maintained in constantv seal- A ing engagement with the axle.

shown in Fig. 9 of the drawings, in which 'a laminated wood body portion 53 is` provided with an inner concave groove deiining the circular opening through the dustA guard, the groove .being @u adapted to receive a sealing ring 54 made of resilient material such as rubber. The sealing ring 54 is arcuate in cross section, as shown in Fig. 9, and is provided with outwardly extending lugs 55 for gripping the body portion u before explained.

` It will thus be apparent that I have provided an improved dust guard of durable and atl the same time inexpensive construction, whichl is adaptedto prevent,` access of foreign mattertto u the axle bearing regardless of relative'movement of the parts or'of wear.

While several illustrative embodiments of the invention have been described in detail, it is not my intention to limit its scope otherwise than by the terms of the appended claims. y

53 as herein- Y Having now described my invention, what I claim las new and desire to secure by Letters Patent, is:

1, A dust guard for car journal boxes comtion having'an inner annular sealing lip surro'undedby a fiat web portion terminating in an outer channeled sealing portion, rigid reenforcing sections'disposed on opposite sides of said flat web portion, and means for clamping said rigidmembers and said web portion together.

2. `A dust guard for car journalboxes comprising, in combination, a rigid body portion having a circular `opening formed therein, a fiexible annular sealing member mounted within said opening and lhaving lugslformed thereon and tted within suitable recesses formed in said body portion, and a channeled sealing member fitted around the peripheral edge of said body portion and having outwardly extending exible `iianges formed thereon, said body portion having .marginal recesses following the contour thereof for receiving said iiexible iianges.

3. A dust guard for a car journal box compris-- ing, in combination, a rigid body portion having marginal recessesfollowing the contour of said portion and provided with a circular opening, a flexible annular sealing portion disposed within said opening, and a flexible channel sealing portion engaging the peripheral edge of said body portion and having outwardly inclined yieldable flanges formed`thereon,said flanges being adapted to be flexed into said marginal recesses.

Rox a. STEVENS. 

